EventConverter::prepareTimeZone

private function prepareTimeZone(
	BaseDate $date,
	?BaseDateTimeZone $timeZone,
	bool $fullDay
): string
{
	if ($timeZone)
	{
		return $timeZone->getTimeZone()->getName();
	}

	if (!$fullDay)
	{
		$coreDate = $date->getDate();
		if ($coreDate instanceof TypeDateTime)
		{
			return $coreDate->getTimeZone()->getName();
		}
	}

	return $this->getDefaultTimezone();
}